50 kuintal - 2 ton + 2.500ons = .. kg

50 kuintal = 50 x 100
                = 5000 kg

2 ton = 2 x 1000
         = 2000 kg

2500 ons = 2500 x 0,028
                = 70,8

5000 - 2000 + 70,8 = 3000 + 70,8
                               = 3070,8 kg


Semoga Membantu :)